I always tell people at shows that vintage cards (for the most part) will never go down. Cobb / Ruth / Mantle can't do anything anymore to negatively affect their value while Trout / Harper / Strasburg, etc can blow out a knee / arm for a pitcher and they could be done. Name 1 high profile Ruth / Mantle / Cobb / Matty, etc that has lost value over the last 10 years?
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